Annotations on the First Cosmic Velocity and the Second Cosmic Velocity 第一和第二宇宙速度的诠释
Analysis and calculation of the second and the third cosmic velocity 第二和第三宇宙速度的分析与计算
The problems on calculating of the second and the third cosmic velocity are analyzed. The third cosmic velocity of 13.6 km · s-1 is obtained in the adiabatic approximation. 本文分析了第二、第三宇宙速度计算中存在的问题,导出绝热近似下第三宇宙速度的数值为13.6km/s。
The implications of the first cosmic velocity and the second cosmic velocity are discussed. the blurred knows relative to the two velocities are cleared. 讨论了第一和第二宇宙速度的含义,澄清了与这两个速度有关的一些模糊认识。